StadiumSignal Iduna Park
| Current capacity of the stadium |
| Standing | 44 800 |
| Seats | 28 800 |
| Tribune | 18 100 |
| Seats for sponsors | 2 500 |
| Fans attended |
| 9. 7. 2026 | Borussia Dortmund-1.FC Turbo Kremmen | 32 044 |
| 7. 7. 2026 | Borussia Dortmund-Třeboutice Fk | 41 163 |
| 7. 7. 2026 | Borussia Dortmund-Fortuna Vasas FC | 38 270 |
| 7. 7. 2026 | Borussia Dortmund-FC Krompachy | 38 766 |
| 7. 7. 2026 | Borussia Dortmund-Újbudai Meteor | 40 650 |
| 4. 7. 2026 | Borussia Dortmund-FC Erfurt | 35 236 |
| 3. 7. 2026 | Borussia Dortmund-Atalanta BC 1907 | 41 653 |
| 3. 7. 2026 | Borussia Dortmund-Atalanta BC 1907 | 40 226 |
| 3. 7. 2026 | Borussia Dortmund-Genzersdorf | 41 611 |